Near field connection for secure tractor trailer communication, and associated systems and methods

1. A system for wireless communication between a tractor and a trailer, comprising: a first transceiver (TRX) attached to a first part of the tractor; a second TRX attached to a second part on the trailer, wherein the first part is a coupling device and the second part is an engagement pin, and the first and second parts form a mechanical coupling interface between tractor and the trailer; a first TRX holder on the first part and configured to carry the first TRX, the first TRX holder comprising a first locking feature; and a second TRX holder on the second part configured to carry the second TRX, the second TRX holder comprising a second locking feature; wherein the first locking feature and the second locking feature are configured to be coupled while the first part engages with the second part, and wherein coupling between the first locking feature and the second locking feature brings the first TRX within an operational distance of the second TRX, wherein the operational distance is 4 centimeters or less, and wherein the first locking feature and the second locking feature, when coupled, cooperate to preserve an orientation between the first TRX and the second TRX regardless of rotation of the first part relative to the second part.

2. The system of claim 1 , wherein the first TRX is attached to a fifth wheel of the tractor, and the second TRX is attached to a kingpin of the trailer.

3. The system of claim 1 , wherein the first TRX and the second TRX communicate at a near-field radio frequency band of 13.56 MHz.

4. The system of claim 1 , further comprising a third TRX communicatively coupled to at least one of the first TRX or the second TRX.

5. The system of claim 4 , wherein the third TRX is carried by an operator.

6. The system of claim 4 , wherein the third TRX is housed in a base of a loading depot.

7. The system of claim 1 , further comprising at least one weight sensor configured to sense a load on an axle of the trailer, wherein the weight sensor is in a wireless communication with the second TRX.

8. The system of claim 1 , further comprising a backup camera attached to the trailer, wherein the backup camera is in a wireless communication with the second TRX.

9. A method for wireless communication between a tractor and a trailer, comprising: coupling the tractor with the trailer via a mechanical coupling interface, wherein the tractor carries a first transceiver (TRX) supported by a first holder on a fifth wheel of the mechanical coupling interface and the trailer carries a second TRX supported by a second holder on a kingpin of the mechanical coupling interface,. wherein coupling the tractor with the trailer brings the first TRX within an operational distance from the second TRX, the operational distance being 4 centimeters or less, and wherein the first holder and the second holder are arranged such that, when coupled, the first holder and the second holder cooperate to preserve an orientation between the first TRX and the second TRX regardless of rotation of the fifth wheel relative to the kingpin; and establishing a wireless communication between the first TRX and the second TRX.

10. The method of claim 9 , wherein the wireless communication is a secure wireless communication, the method further comprising retaining the first TRX and the second TRX within the operational distance during vehicle operation via a first locking feature proximate the first TRX and a second locking feature proximate the second TRX.

11. The method of claim 10 , further comprising: disengaging the tractor from the trailer; and maintaining the secure wireless communication between the first TRX and the second TRX after disengaging the tractor from the trailer.

12. The method of claim 9 , wherein the wireless communication between the first TRX and the second TRX is established after engaging the tractor with the trailer is completed.

13. The method of claim 9 , further comprising wirelessly exchanging data between the first TRX and the second TRX.

14. The method of claim 13 , wherein the data comprise instructions to extend fins on the trailer.

15. The method of claim 13 , wherein the data comprise axle weight obtained by a weight sensor.

16. The method of claim 13 , wherein the data comprise images obtained by a backup camera carried by the trailer.

17. The method of claim 13 , wherein the data comprise a unique identifier of the trailer.

18. The method of claim 13 , further comprising: measuring a distance from a trailer to another object by a proximity sensor carried by the trailer; and wirelessly transmitting the distance from the second TRX to the first TRX.

19. The method of claim 9 , further comprising: after establishing the wireless communication between the first TRX and the second TRX, establishing a wireless communication between a third TRX and at least one of the first TRX and the second TRX, wherein the third TRX is external to the tractor and the trailer.

20. The method of claim 19 , wherein the third TRX is carried by a base in loading depot.

21. A vehicle, comprising: a first mechanical coupling interface of a tractor configured to couple to a trailer for applying a towing force on the trailer; a first transceiver (TRX) carried by the first mechanical coupling interface; a second mechanical coupling interface of the trailer configured to couple to the first mechanical coupling interface of the tractor; and a second transceiver (TRX) carried by the second mechanical coupling interface; wherein the first mechanical coupling interface and the second mechanical coupling interface are arranged such that, when coupled, an orientation between the first TRX and the second TRX is maintained regardless of a change in orientation of the tractor relative to the trailer.